In surprising new research, experts report that the timing of taking your blood pressure medicine could have a big impact on whether or not you develop type 2 diabetes.
Specifically, the Spanish researchers found that taking blood pressure medications at bedtime rather than waiting until morning may cut the risk of developing type 2 diabetes by more than half.
Source: Timing Your Blood Pressure Meds Right Might Prevent Diabetes
Controlling blood pressure is one of the main goals in the care of diabetics. The ultimate disease processes that kills people in diabetes is atherosclerosis which then leads to coronary artery and peripheral arterial disease. It also leads to chronic renal insufficiency (bad kidneys, basically – that’s why diabetics tend to end up on dialysis), retinopathy, and arguably contributes significantly to vascular dementia and stroke. Any number of those consequences of diabetes can be fatal.
So, then, if we can prevent atherosclerosis in the first place, we can prevent many of those downstream consequences. That’s why it’s important to control things like blood sugar, blood pressure, cholesterol, and activity level in patients with diabetes. Using that logic, it makes sense that this would be helpful to someone who already has diabetes as well (and for similar reasons).
That said, there is a link between nocturnal hypotension and ischemic optic neuropathy. So you may reduce your diabetes risk, but you may increase your risk of vision loss. The theory is the low blood pressure at night time leads to such low perfusion of the optic nerve that it is irreparably damaged. As a result, physicians may recommend the opposite of this study. I should point out this is anecdotal evidence from other doctors. Large scale studies proving this link have not been performed. See: http://www.ncbi.nlm.nih.gov/pmc/articles/PMC3721361/
It’s also been found that taking your aspirin at bedtime is more effective.